210020102121001 has 16 divisors (see below), whose sum is σ = 211135722266880. Its totient is φ = 208906488766080.

The previous prime is 210020102120989. The next prime is 210020102121083. The reversal of 210020102121001 is 100121201020012.

It is a cyclic number.

It is not a de Polignac number, because 210020102121001 - 2²¹ = 210020100023849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210020102121901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4257168331 + ... + 4257217663.

It is an arithmetic number, because the mean of its divisors is an integer number (13195982641680).

Almost surely, 2^{210020102121001} is an apocalyptic number.

It is an amenable number.

210020102121001 is a deficient number, since it is larger than the sum of its proper divisors (1115620145879).

210020102121001 is a wasteful number, since it uses less digits than its factorization.

210020102121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69216.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 210020102121001 its reverse (100121201020012), we get a palindrome (310141303141013).

The spelling of 210020102121001 in words is "two hundred ten trillion, twenty billion, one hundred two million, one hundred twenty-one thousand, one".